I just rebuilt my sons motor. New crank and top end we bought this quad with a blown motor so I never heard it run. It had k&n pods on it I replaced them with a air box with pro flow adapter and a k&n filter and stock lid with vents no snorkel.the motor is 30 over, stock head, boysen reeds ,stock cage with pro circuit pipes the main in the carbs now is a plastic 330 seems big to me. needle lowest groove, 2.5 pilot I am at near sea level any suggestions I have not even started the motor yet.